diff --git a/seqloc.cabal b/seqloc.cabal
--- a/seqloc.cabal
+++ b/seqloc.cabal
@@ -1,5 +1,5 @@
 Name:                seqloc
-Version:             0.2
+Version:             0.2.1
 Cabal-Version:       >= 1.2
 Synopsis:            Handle sequence locations for bioinformatics
 Description:         Handle sequence locations for bioinformatics
@@ -24,7 +24,7 @@
                        Bio.SeqLoc.OnSeq,
                        Bio.SeqLoc.LocRepr,
                        Bio.SeqLoc.Transcript
-  Build-depends:       base >= 4.3 && < 5, bytestring, haskell98, attoparsec >= 0.8.5
+  Build-depends:       base >= 4.2 && < 5, bytestring, haskell98, attoparsec >= 0.8.5
   Hs-Source-Dirs:      src
   Ghc-options:         -Wall
 
@@ -37,7 +37,7 @@
                        Bio.SeqLoc.SpliceLocation,
                        Bio.SeqLoc.OnSeq,
                        Bio.SeqLoc.LocRepr
-  Build-depends:       base >= 4.3 && < 5, bytestring, haskell98, attoparsec >= 0.8.5,
+  Build-depends:       base >= 4.2 && < 5, bytestring, haskell98, attoparsec >= 0.8.5,
                        QuickCheck, random
   Hs-Source-Dirs:      src, test
   Ghc-options:         -Wall